Ajax Wireless Alarm PIR Sensor Door & Window Opening Detector Door & Window Alarm  (110 dB)

Protect your home from the very first sign of intrusion with this advanced wireless door and window opening detector. Designed for indoor use, it works perfectly on standard and roof windows, allowing you to safely leave them slightly open when you go out. Using a combined magnetic contact and vibration sensor (reed switch + accelerometer), it instantly detects opening, vibration or impact and sends an alarm to the hub in just 0.15 seconds. Powered by a long‑life CR123A battery (up to 5 years), it uses Jeweller radio technology for a secure, reliable connection with a range of up to 1,200 m in open space. The encrypted two‑way communication (AES‑based) ensures protection against fraud, jamming detection and tamper alerts. You can configure and test the detector remotely. Key features: - Colours: White or Black - Wireless indoor detector for doors and windows, including roof windows - Operates only with Hub and Hub Plus - Activation threshold: small magnet 1 cm, big magnet 2 cm - Operating frequencies: 868.0–868.6 MHz, auto-adjusting RF power up to 20 mW - Detector polling period: 12–300 s - Built-in temperature sensor - Operating temperature: +5 °C to +40 °C; humidity up to 75% - Anti-sabotage: anti-fraud protection, jamming detection, tamper-resistant design - Certification: Grade 2, CE This detector offers professional-level security in a compact, discreet design, ideal for apartments, houses and offices.